docs: def get_subnet(self, subnet_id, **kwargs):
          """Returns information about a single subnet.
  
          :param string id: Either the ID for the subnet or its network
                            identifier
          :returns: A dictionary of information about the subnet
          """
          if 'mask' not in kwargs:
              kwargs['mask'] = DEFAULT_SUBNET_MASK
  
          return self.subnet.getObject(id=subnet_id, **kwargs)